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8b33204f37
* third_party: Add libcxxabi Added libcxxabi from LLVM 17.0.6 The library implements the Itanium C++ exception handling ABI. * third_party/libcxxabi: Enable __cxa_thread_atexit Enable `__cxa_thread_atexit` from libcxxabi. `__cxa_thread_atexit_impl` is still implemented by the cosmo libc. The original `__cxa_thread_atexit` has been removed. * third_party/libcxx: Build with exceptions Build libcxx with exceptions enabled. - Removed `_LIBCPP_NO_EXCEPTIONS` from `__config`. - Switched the exception implementation to `libcxxabi`. These two files are taken from the same `libcxx` version as mentioned in `README.cosmo`. - Removed `new_handler_fallback` in favor of `libcxxabi` implementation. - Enable `-fexceptions` and `-frtti` for `libcxx`. - Removed `THIRD_PARTY_LIBCXX` dependency from `libcxxabi` and `libunwind`. These libraries do not use any runtime `libcxx` functions, just headers. * libc: Remove remaining redundant cxa functions - `__cxa_pure_virtual` in `libcxxabi` is also a stub similar to the existing one. - `__cxa_guard_*` from `libcxxabi` is used instead of the ones from Android. Now there should be no more duplicate implementations. `__cxa_thread_atexit_impl`, `__cxa_atexit`, and related supporting functions, are still left to other libraries as in `libcxxabi`. `libcxxabi` is also now added to `cosmopolitan.a` to make up for the removed functions. Affected in-tree libraries (`third_party/double-conversion`) have been updated.
106 lines
3.3 KiB
C
106 lines
3.3 KiB
C
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef ____CXXABI_CONFIG_H
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#define ____CXXABI_CONFIG_H
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#if defined(__arm__) && !defined(__USING_SJLJ_EXCEPTIONS__) && \
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!defined(__ARM_DWARF_EH__) && !defined(__SEH__)
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#define _LIBCXXABI_ARM_EHABI
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#endif
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#if !defined(__has_attribute)
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#define __has_attribute(_attribute_) 0
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#endif
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#if defined(__clang__)
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# define _LIBCXXABI_COMPILER_CLANG
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# ifndef __apple_build_version__
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# define _LIBCXXABI_CLANG_VER (__clang_major__ * 100 + __clang_minor__)
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# endif
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#elif defined(__GNUC__)
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# define _LIBCXXABI_COMPILER_GCC
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#elif defined(_MSC_VER)
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# define _LIBCXXABI_COMPILER_MSVC
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#elif defined(__IBMCPP__)
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# define _LIBCXXABI_COMPILER_IBM
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#endif
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#if defined(_WIN32)
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#if defined(_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS) || (defined(__MINGW32__) && !defined(_LIBCXXABI_BUILDING_LIBRARY))
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#define _LIBCXXABI_HIDDEN
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#define _LIBCXXABI_DATA_VIS
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#define _LIBCXXABI_FUNC_VIS
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#define _LIBCXXABI_TYPE_VIS
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#elif defined(_LIBCXXABI_BUILDING_LIBRARY)
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#define _LIBCXXABI_HIDDEN
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#define _LIBCXXABI_DATA_VIS __declspec(dllexport)
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#define _LIBCXXABI_FUNC_VIS __declspec(dllexport)
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#define _LIBCXXABI_TYPE_VIS __declspec(dllexport)
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#else
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#define _LIBCXXABI_HIDDEN
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#define _LIBCXXABI_DATA_VIS __declspec(dllimport)
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#define _LIBCXXABI_FUNC_VIS __declspec(dllimport)
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#define _LIBCXXABI_TYPE_VIS __declspec(dllimport)
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#endif
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#else
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#if !defined(_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS)
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#define _LIBCXXABI_HIDDEN __attribute__((__visibility__("hidden")))
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#define _LIBCXXABI_DATA_VIS __attribute__((__visibility__("default")))
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#define _LIBCXXABI_FUNC_VIS __attribute__((__visibility__("default")))
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#if __has_attribute(__type_visibility__)
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#define _LIBCXXABI_TYPE_VIS __attribute__((__type_visibility__("default")))
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#else
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#define _LIBCXXABI_TYPE_VIS __attribute__((__visibility__("default")))
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#endif
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#else
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#define _LIBCXXABI_HIDDEN
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#define _LIBCXXABI_DATA_VIS
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#define _LIBCXXABI_FUNC_VIS
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#define _LIBCXXABI_TYPE_VIS
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#endif
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#endif
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#if defined(_LIBCXXABI_COMPILER_MSVC)
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#define _LIBCXXABI_WEAK
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#else
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#define _LIBCXXABI_WEAK __attribute__((__weak__))
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#endif
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#if defined(__clang__)
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#define _LIBCXXABI_COMPILER_CLANG
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#elif defined(__GNUC__)
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#define _LIBCXXABI_COMPILER_GCC
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#endif
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#if __has_attribute(__no_sanitize__) && defined(_LIBCXXABI_COMPILER_CLANG)
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#define _LIBCXXABI_NO_CFI __attribute__((__no_sanitize__("cfi")))
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#else
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#define _LIBCXXABI_NO_CFI
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#endif
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// wasm32 follows the arm32 ABI convention of using 32-bit guard.
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#if defined(__arm__) || defined(__wasm32__) || defined(__ARM64_ARCH_8_32__)
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# define _LIBCXXABI_GUARD_ABI_ARM
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#endif
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#if defined(_LIBCXXABI_COMPILER_CLANG)
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# if !__has_feature(cxx_exceptions)
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# define _LIBCXXABI_NO_EXCEPTIONS
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# endif
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#elif defined(_LIBCXXABI_COMPILER_GCC) && !defined(__EXCEPTIONS)
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# define _LIBCXXABI_NO_EXCEPTIONS
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#endif
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#if defined(_WIN32)
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#define _LIBCXXABI_DTOR_FUNC __thiscall
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#else
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#define _LIBCXXABI_DTOR_FUNC
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#endif
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#endif // ____CXXABI_CONFIG_H
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